Insulator for high-tension currents.



No. 879,068. 4 PATENTED FEB. 11, 1908.

L. STEINBERGBR.

INSULATOP. FOR HIGH TENSION GURRENTS.

APPLICATION FILED AUG. 12. 1907.

2 SHEETS-SHEET 1.

PATENIED PEBfll, 1908.

L. STEINBERGEK INSULATOR FOR HIGH TENSION QURRBNTS.

APPLICATION FILED-AUG. 12.1967.

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1 INVENTOI? Y ATTORNEYS LOUIS STEINBEBGEB, or NEW YORK, N. v.

I INSULATOR FOR HIGH-TENSION GURRENT S.

Specification of Letters Patent.

Patented Feb. 11, 1908.

I Application filed August 12. 1907- Serial No. 388.175.

To all whom it may concern: a I

Be it known that I, LOUIS STEINBERGER, a citizen of the United States, and a resident of the city of New York, borough of Brook- 5 lyn, in the county of Kings and State of 7 New York, have invented a new and Improved Insulator for High-Tension Currents, of which the following is a full, clear, and exact description.

My invention relates to insulators and admits of general use but is of peculiar service upon transmission lines carrying currents of very high potential, and espgpially adapted to prevent arcing from the e to the support under conditions where such arcing would otherwise take place.

Among the several objects of my invention are the following:

I. To secure the greatest possible dielectric elficiency combined with a maximum of mechanical strength and aminimum of materials'and weight;

II. To provide an insulator having a hood adapted to support a plurality of conductors simultaneously;

III. To provide an insulator having a hood provided with a' plurality of separate chanlrluals extending in the general direction of the ne; IV. To provide for sheltering the entire upper portion of the insulator;

0 provide a shield or umbrella for an insulator of such form as to direct the flow of ..moisture from its surface, away from the. cond'uctor;

To provide an insulator having a channel, and revoluble locking members disposed within said channel;

VII; To provide a locking mechanism for the conductor of very sim 1e form and construction possessing the. ghost efiicienc and absolute reliability in action; VIII. To facilitate the d ping of moisture-from certain portions of t e insulator by causing the moisture to be discharged therefrom in a number of separate streams;

DI. To. facilitate the mounting, the removal and the replacement of the conducting wire or cable relatively to the insulator bod a To center the conducting relatively to certain other parts; XI. To provide various details of con struction for the purpose of improving the general fiiciency of the insulator;

XII. To prevent undue chafing .or wearing wire or cable cable or other conducting mem XIII. To provide er rests; an lmproved form of mechanism for securely supporting and lockmight otherwise tend to occur;

XV. To provide means for employing in sulators of comparatively small size for carrying currents of very high potential; and XVI. To provide means for'securely supporting a conductor in a manner so as to make each span an independent mechanical unit.

Referenceis to be had to the accompanying'drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l-is a plan view of my improved insulator showing the mountings for the wiring or cable, the sheltering hood being removed; Fig. 2 is a longitudinal central section through the insulator and its. accompanying parts, showingthe sheltering hood 1n position'and also showing how the wire is mounted and held imposition; Fig. 3 is -a vertical of that part of the insulator upon which the l central cross section through the insulator the conducting wire or cable passes centrally;

this head being provided with a divided stem for supporting the sheltering hood; Fig. 5 is a perspective showing one of the clamps used for centering the main wire or cable; and Fig. 6 is a reduced plan view of the sheltering hood.

1 A cross arm is shown at 7 and a pin body at 8. This pin bod is rovided with a shank 9 extending t oug the cross arm and is further provided with petticoats 10 and with a frusto-conical portion 11. The pin body is further rovided with a threaded stem 12. The ins ator body is shown at 13 and is provided with a frusto-conical ortion 1 4, the latter being provided internally with etticoats 1.5 integral therewith. The body portion 13 fits upon the threaded stem 12.

A hood 16 of insulating material is provided upon its upper surface with longitudinal ribs 17 each rib being parallel with the of substantially arcuate form,

general direction of the wire and extending from edge to edge of the insulating hood 16. Each rib terminates in beads 18 protruding slightly beyond the edge of the insulating hood. Intermediate of these beads are concave recesses 19 from which moisture is readily charged. I find that this arrangement facilitates the dripping of moisture which gathers in streams and flows through longitudinal channels 20 parallel with the wire, being discharged upon opposite. sides of the wire and missing the cross arm 7. Auxiliary wires 21 1nay be placed in these channels in cases of emergency or whenever desired, the weight of the wires retaining them in position. A wide channel 22 extends centrally of the insulating hood. A plate 23 of metal is provided upon its under surface with hooks 24 directed toward each other and embed ded within the body portion of the insulator hood, thus constituting anchorages which prevent the removal of the plate 23. This plate is provided with a substantially tubular portion 25 having a slot 26 extending throughout the length thereof. Lugs 27, each of substantially semi-cylindrical form, are mounted integrally upon opposite sides of the slot 26 and together constitute a divided stem, the two parts of which are separated by a slot 28. The inner ends of the substantially tubular member 25 are provided with threads 29, and the core 30 of a tubular member 25 extends entirely through the latter and may be closed by substantially tubular clamps 31, threaded exter-- nally, as shown in Figs. 2 and 5. Each of these clamps is threaded, after the manner of a screw, and is provided with a square head 32 and with a slot 33 extending entirely through the clamp. The clamp is preferably made with a tapered body, as indicated. A screw cap 34 is provided with anchorages 35, 36 and is embedded within a sheltering hood 37, in such manner that by-turning this hood the screw cap 34: may be connected with -'or disconnected from the divided stem 27. By aid of this screw cap the shelteringhood may be removed or replaced at will. The sheltering hood 37 is provided with indentations 38 for facilitating the flow of moisture from its surface at four distinct points, as will be understood from Fig. 6. The main wire or cable is shown at 39. My invention is as follows: The body portion 15 and hood 16 being of insulating material are pressed up or cast preferably integrally, the metallic plate 23 and tubular member 25 being preferably embedded within the-insulatingmaterial, as indicated in Fig. 2. The insulator pin 8 is next mounted upon the cross arm 7 or analogous su port, and the body portion 13 is then screwe upon the upper end of the insulator pin and turned dis - and clamps evaoee to such an extent that the late 23 and its tubular portion 25 are parallel with the gen eral direction in which the wire or cable 39 is to lie. The wire or cable may now be lifted into position or threaded through the tubular portion 25. The cored guards 31 may next be screwed into the ends of the tubular member 25. Preferably, however, the cored plugs 31 are placed approximately in their respective positions before the wire 39 is laced in osition. The plugs are turned so that the s ots 33 are uppermost and register with the slot 26, and the wire is raised and simply dropped into the slots. The guards 31 are then turned half a revolution (see Fig. 2) so that slots 33 are now downward whereby the wire is firmly and securely locked within the tubular slotted member 25 and cannot be dislodged or removed except by unscrewing the slotted clamping members. If desired, the sheltering hood 37 is next screwed into position. is em loyed it squeezes together the semicylin rical portions 27 gmenting the locking action or the clamps; and effectually preventing any movement whatever of the locked parts.

It will be noted that owing to the general comformity of the upper surface of the pro-' tecting hood or umbrella, the moisture talling thereupon is prevented from flowing or dripping in excessive quantities upon the conductor, and is directed to flow and run or drip off at points some distance from the conductor.

I do not limit myself to the use of any particular materials from which to construct my insulator, but prefer to employ the trose nor do I form nor to the parts herein shown and described, nor to any articular combination of elements entering into the construction of my insulator, nor do I limit myself to employ in every instance a shield or umbrella for my use in every instance a locking mechanism for the conductor, as it will be evident to those skilled in the art that changes in construction form and arrangement of the parts that may be resorted to without departing from the spirit or scope of my invention.

Having thus described my invention, I claim as new and desire to secure by Letters Patent: 3

1. An insulator comprising a body ortion, a plate mounted thereupon and provi ed with a tubular portion for receiving a conductor, fitted into said tubular portion and provided with a ertures through which a conductor may be t lireaded. 2. An insulator comprising a body portion, a metallic member mounted thereupon an provided with a slot, and plugs connected with said metallic member and provided When this hood thereby still further insulator, nor to insulating material well known in the art as elec-' I with slots-adapted to register with said slot 7 central core and revoluble. for .th 15.

- ceive a the purpose of of said meta ic member.

4. An msulator member adapted to reconductor and having agreater length than breadth, said member being provided with longitudinally disposed barriers between the pomt that receives the conductor and the side edges so as to produce a of insulating materlal, a hollow slotted memh l said ribs terminating striking distance at the sides a proximately equal to the striking distance f i'om the conductor to the base at the ends of the insulator.

5. An insulator, comprising a body portion her having a portion embedded within said insulating material, said member being prohaving a slot, and a 6. An msulator comprisin a hood of in sulating material provided with ribs extende of said insulator hood,

ing from edge'to edge in beads extending outwardly from said hood for facilitating the dripplng of moisture. g

7. An insulator comprising a hood of in-' sulating material provided with ribs separated by channels, the ends of said ribs terminating in beads extending outwardly from said hood, the ends of sad channels being concave for the purpose 'of facilitating the sraoes scrlbed.

8. An insulator comprising a body portion of insulating material, a metallic head mounted thereupon and. provided with a portion having a slot for admitting a conductor, and a sheltering hood engaging said portion.

' 9. An insulator comprising a body portion of insulating material, a metallic member mounted thereupon and provided with a portion for supporting a conductor, and a sheltering hood mounted upon said portion of said metallic member.

10. An insulator, comprising a body portion provided with means for supporting a conductor, and a sheltering hood supported above said conductor, said sheltering hood being provided with a plurality of beads extending outwardly therefrom for facilitating the dripping of moisture therefrom in predetermined directions.

11. An insulator provided with a channeled to tion being threaded internally, and a clamping device threaded externally and fitting said channeled portion for the purpose of o ding a line in position relatively thereto.

12. The combination of a member of substantially tubular form provided withends, and With threads 'disposed internally of said ortion ends, and further provided with a slot, and clamping members threaded externally and mating said ends of said first-mentioned member for the purpose of securing a conductor therein.

In testimony name to this specification in the presence of two subscribing witnesses.

.LOUIS STEINBERGER.

Witnesses:

WALTON HARRISON,

EVERARD l3. MARSHALL.

receive a conductor, said porwhereof'I have signed my 

